Sun blind



Jan. 26, 1932. F. J. DRYSDALE sun BLIND Filed July 22, 1930 llll ltd

l pairing ventilation.

Patented ran. as, rear men an narsnann on menu naxonc'ron, aes'rnaraa are eaten hmiltcetlen Jl'n'ly This invention refers to sun hlinds and the lilre oi the hind consisting of a series of slats which are raised or lowered by suitable means such cords passing around pulleys.

lin cennection with. such sun lolinds there are two disabilities, one of which is that light through the window is considerably decreased and ventilation impaired and the other is that such blinds cause annoyance by rattling.

. llne object oi" the invention is to efiect an nuiprorement in the construction of the slats whereby when the blind is drawn down increased light will be obtained without im- Another object is to prevent the slats rattling when the blind is in use.

The invention is illustrated by the accompanying drawings whereof-- l is a vertical section through the sun hlind when in use and taken on line ll oi 2. A v

2 is an enlarged horizontal section through the side lirarne of the blind and-- Fig. 3 an enlarged elevation out portion of two slats with a part in section.

l ig. t an enlarged detail the stopping and anti-rattling device and- Fig. 5 is a detail illustrating a slight inedilicatien in the shape ot the slat.

illustrated in these drawings a vertical "trams is tired at each side out the window opening l preterably cased in metal 2 as shown l ig.

lace ell each "frame parallel vertical I Weeres d termed and the partitions at between same are cased in metal, thereby providing smooth linings 5 to the walls of the grooves. it groove 3 is preridcdier each slat 6 oi the hlind and it is unnecessary tor the linings 5 and also the grooves to eatend any turt er downwardly from the top than the maximum length of movement at the slut in a particular groove. The upper end of each slat it is inclined in an upward and inward direction to term dctlecters 'l and only the side edges oil the vertical portion of the slats engage the grooves 51 in the side frames F. .hn outwardly projecting bent tlange 9 is WW. hcrial No.

189351, and in Australia August 7, 1929. V

formed on the bottom of each slat and a similar but inwardly projecting flange is revided on the upper edge of the upper inclineddeilector of the slat.

ll desired the side edges 8 of the slats may be bent as at 10 out of vertical plane as the main vertical portion of the slat as illustrated in Fig. 5 in order to strengthen said edges or for the same purposethe edges may ibe stiflened by metal stripsreither straight or out. I

The slats when 'loweredeach in turn commencing from the upper one come to rest on individual stops and according to this inven tion a cam or wedge or bevelled ended block 11 is fixed to the side of each slat near its side edges or the metal strips thereon which blocks, when a slat is lowered contacts with freely rotatable rollers 12 on lates 1d fixed to the side frames F whereby t e rollers constitute stops and each slat is supported in its desired position.

The lower or care faces 13 ot the bloclts wedge at the leach oi the rollers and press the slats against one side or the guides in the in side frames so that the slat is held firmly in position and rattlin of the blind prevented.

Upon the slats oing lifted the cam or wedge-shaped blocks are immediately freed from the rollers.

According to the means illustrated for raising and lowering the sun blind, cords 15 attached to the bottom slat at each side pass over suitable pulleys 16 provided above the blindand a common operating cord 17 is guided around a pulley 18 to winding mechanism 19 operated by a crank handle 20.

By means of this ear the nested slats may be supported when t e blind is raised and the blind partially or completely lowered, each slat in turn commencing from the outer or upper one coming to rest on its stops. On raising the blind the lowermost one supported on its stops upon moving upwardly engages and correspondingly lifts the slat above and so on till all the slats are nested above the window opening.

Uri account of the inclined deflector 7 of each slat and the fact that the bend between said inclined end and the vertical portion of the slat is at a distance from the lower-end of the slat above same, which is determined by the positions of the stops there isa substantial inlet L for sunlight tile rays of which on striking the deflector are deflected thereby and so sup ly substantial illumination for the room. t will be noted however, that I the deflectors 7 cover the inlets L and prevent beams of direct sunlight entering the room. 7

Thus the room is shielded from direct sunlight and at the same time ample reflected 1i t floods the room.

11 order to enable the slats to be fitted in the grooves 3 of the frames F or be re- ,moved' therefrom, the grooves in one of such frames terminate a distance from the upper end of such frame equal to the height of a slat, such construction being illustrated in Fig. 1. v p

I claim g 1. In sun blinds having independent slats, side frames with separate guides for the slats and separate stops on said frames for each slat, said slats being approximately vertical and formed at the up 'er end with a deflector inclined inan inwar and upward direction,

and means to raise and lower said blind.

2. In sun blinds having independent slats, side frames with separate ides for the slats and separate stops on sai frames for each slat, said slats being approximately vertical and formed at the up er end with a deflector inclined in an inwar and upward direction,

and said stopsso located that an inlet is provided between the junction of the vertical portions of the slats with said inclined deflector and the bottom of the adjacent upper slat and direct ent said deflectors cover the said inlets against of'light into the room and means to raise an lower said blind.

3. 1'n sun blinds having independent slats,

side frames with separate guides for the slats and se arate stops on said frames for each slat, sa1d slats being approximately vertical andformed "at the up r end with a deflector Inclined in an inwar and upward direction,

and said stops consisting of rollers which are engaged b cam or wed e shaped blocks fixed on and a acent the si e edges of the slats and means to raise and lower said blind.

,4. In sunblinds having independent slats,

side frames with separate guides for the slats and se arate stops on said frames for each slat, sa1d slats being approximately vertical and formed at the up r end with a deflector inchned in an inwar and upward direction cords attached to the lowermost slat pass round pulleys above the blind and winding mechanism for operatin FREDERICK J 0 said cords. l DRYSDALE. 

